A cell analyser composed of four lasers. Introduction The BD LSR Fortessa (4 laser) analyser is a powerful and flexible cell analyser. Specifications The BD LSR Fortessa (4 laser) analyser has 4 lasers: violet (405 nm), blue (488 nm), yellow-green (561 nm) and red (640 nm), and can detect up to 16 fluorescent channels. This article was published on 2024-02-26